Rect
Geometry::ComputePathBounds()
{
if (!IsBuilt ())
Build ();
if (!path || (path->cairo.num_data == 0))
return Rect ();
cairo_t *cr = measuring_context_create ();
cairo_append_path (cr, &path->cairo);
double x1, y1, x2, y2;
cairo_path_extents (cr, &x1, &y1, &x2, &y2);
Rect bounds = Rect (MIN (x1, x2), MIN (y1, y2), fabs (x2 - x1), fabs (y2 - y1));
measuring_context_destroy (cr);
return bounds;
}
static void
_adg_render(AdgEntity *entity, cairo_t *cr)
{
AdgStroke *stroke;
AdgStrokePrivate *data;
const cairo_path_t *cairo_path;
stroke = (AdgStroke *) entity;
data = stroke->data;
cairo_path = adg_trail_get_cairo_path(data->trail);
if (cairo_path != NULL) {
cairo_transform(cr, adg_entity_get_global_matrix(entity));
cairo_save(cr);
cairo_transform(cr, adg_entity_get_local_matrix(entity));
cairo_append_path(cr, cairo_path);
cairo_restore(cr);
adg_entity_apply_dress(entity, data->line_dress, cr);
cairo_stroke(cr);
}
}
void
CairoPathContext::DuplicateContextAndPath()
{
// Duplicate the path.
cairo_path_t* path = cairo_copy_path(mContext);
// Duplicate the context.
cairo_surface_t* surf = cairo_get_target(mContext);
cairo_matrix_t matrix;
cairo_get_matrix(mContext, &matrix);
cairo_destroy(mContext);
mContext = cairo_create(surf);
// Set the matrix to match the source context so that the path is copied in
// device space. After this point it doesn't matter what the transform is
// set to because it's always swapped out before use.
cairo_set_matrix(mContext, &matrix);
// Add the path, and throw away our duplicate.
cairo_append_path(mContext, path);
cairo_path_destroy(path);
}
static void
_adg_render(AdgEntity *entity, cairo_t *cr)
{
AdgADim *adim;
AdgDim *dim;
AdgADimPrivate *data;
AdgDimStyle *dim_style;
AdgDress dress;
const cairo_path_t *cairo_path;
adim = (AdgADim *) entity;
data = adim->data;
if (!data->geometry_arranged) {
/* Entity not arranged, probably due to undefined pair found */
return;
}
dim = (AdgDim *) entity;
dim_style = _ADG_GET_DIM_STYLE(dim);
adg_style_apply((AdgStyle *) dim_style, entity, cr);
adg_entity_render((AdgEntity *) adg_dim_get_quote(dim), cr);
if (data->marker1 != NULL)
adg_entity_render((AdgEntity *) data->marker1, cr);
if (data->marker2 != NULL)
adg_entity_render((AdgEntity *) data->marker2, cr);
cairo_transform(cr, adg_entity_get_global_matrix(entity));
dress = adg_dim_style_get_line_dress(dim_style);
adg_entity_apply_dress(entity, dress, cr);
cairo_path = adg_trail_get_cairo_path(data->trail);
cairo_append_path(cr, cairo_path);
cairo_stroke(cr);
}
void
Geometry::Draw (cairo_t *cr)
{
Transform *transform = GetTransform ();
cairo_matrix_t saved;
cairo_get_matrix (cr, &saved);
if (transform) {
cairo_matrix_t matrix;
transform->GetTransform (&matrix);
cairo_transform (cr, &matrix);
}
if (!IsBuilt ())
Build ();
// Geometry is used for Clip so Fill (normally setting the fill rule) is never called
cairo_set_fill_rule (cr, convert_fill_rule (GetFillRule ()));
if (path)
cairo_append_path (cr, &path->cairo);
cairo_set_matrix (cr, &saved);
}
static bool
appendPath_func(JSContext *context,
unsigned argc,
JS::Value *vp)
{
GJS_GET_PRIV(context, argc, vp, argv, obj, GjsCairoContext, priv);
JS::RootedObject path_wrapper(context);
cairo_path_t *path;
cairo_t *cr = priv ? priv->cr : NULL;
if (!gjs_parse_call_args(context, "path", argv, "o",
"path", &path_wrapper))
return false;
path = gjs_cairo_path_get_path(context, path_wrapper);
if (!path) {
gjs_throw(context, "first argument to appendPath() should be a path");
return false;
}
cairo_append_path(cr, path);
argv.rval().setUndefined();
return true;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
cairo_path_t *path;
cairo_t *cr_error;
/* Ensure that calling cairo_copy_path on an in-error cairo_t will
* propagate the error. */
cr_error = cairo_create (NULL);
path = cairo_copy_path (cr_error);
if (path->status != CAIRO_STATUS_NULL_POINTER) {
cairo_test_log (ctx,
"Error: cairo_copy_path returned status of %s rather than propagating %s\n",
cairo_status_to_string (path->status),
cairo_status_to_string (CAIRO_STATUS_NULL_POINTER));
cairo_path_destroy (path);
cairo_destroy (cr_error);
return CAIRO_TEST_FAILURE;
}
cairo_path_destroy (path);
path = cairo_copy_path_flat (cr_error);
if (path->status != CAIRO_STATUS_NULL_POINTER) {
cairo_test_log (ctx,
"Error: cairo_copy_path_flat returned status of %s rather than propagating %s\n",
cairo_status_to_string (path->status),
cairo_status_to_string (CAIRO_STATUS_NULL_POINTER));
cairo_path_destroy (path);
cairo_destroy (cr_error);
return CAIRO_TEST_FAILURE;
}
cairo_path_destroy (path);
cairo_destroy (cr_error);
/* first check that we can copy an empty path */
cairo_new_path (cr);
path = cairo_copy_path (cr);
if (path->status != CAIRO_STATUS_SUCCESS) {
cairo_status_t status = path->status;
cairo_test_log (ctx,
"Error: cairo_copy_path returned status of %s\n",
cairo_status_to_string (status));
cairo_path_destroy (path);
return cairo_test_status_from_status (ctx, status);
}
if (path->num_data != 0) {
cairo_test_log (ctx,
"Error: cairo_copy_path did not copy an empty path, returned path contains %d elements\n",
path->num_data);
cairo_path_destroy (path);
return CAIRO_TEST_FAILURE;
}
cairo_append_path (cr, path);
cairo_path_destroy (path);
if (cairo_status (cr) != CAIRO_STATUS_SUCCESS) {
cairo_test_log (ctx,
"Error: cairo_append_path failed with a copy of an empty path, returned status of %s\n",
cairo_status_to_string (cairo_status (cr)));
return cairo_test_status_from_status (ctx, cairo_status (cr));
}
/* We draw in the default black, so paint white first. */
cairo_save (cr);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
cairo_paint (cr);
cairo_restore (cr);
/* copy path, munge, and fill */
cairo_translate (cr, 5, 5);
make_path (cr);
path = cairo_copy_path (cr);
cairo_new_path (cr);
munge_and_set_path (cr, path, scale_by_two);
cairo_path_destroy (path);
cairo_fill (cr);
/* copy flattened path, munge, and fill */
cairo_translate (cr, 0, 15);
make_path (cr);
path = cairo_copy_path_flat (cr);
cairo_new_path (cr);
munge_and_set_path (cr, path, scale_by_two);
cairo_path_destroy (path);
cairo_fill (cr);
/* append two copies of path, and fill */
cairo_translate (cr, 0, 15);
cairo_scale (cr, 2.0, 2.0);
make_path (cr);
path = cairo_copy_path (cr);
cairo_new_path (cr);
cairo_append_path (cr, path);
cairo_translate (cr, 2.5, 2.5);
cairo_append_path (cr, path);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_fill (cr);
cairo_path_destroy (path);
return CAIRO_TEST_SUCCESS;
}
static cairo_test_status_t
preamble (cairo_test_context_t *ctx)
{
cairo_t *cr;
cairo_path_data_t data;
cairo_path_t path;
cairo_surface_t *surface;
cairo_status_t status;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 1, 1);
status = cairo_surface_status (surface);
if (status) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
/* Test a few error cases for cairo_append_path_data */
#define CAIRO_CREATE() do {\
cr = cairo_create (surface); \
status = cairo_status (cr); \
if (status) { \
cairo_destroy (cr); \
cairo_surface_destroy (surface); \
return cairo_test_status_from_status (ctx, status); \
} \
} while (0)
CAIRO_CREATE ();
cairo_append_path (cr, NULL);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_NULL_POINTER) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
path.status = -1;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_INVALID_STATUS) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
path.status = CAIRO_STATUS_NO_MEMORY;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_NO_MEMORY) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
path.data = NULL;
path.num_data = 0;
path.status = CAIRO_STATUS_SUCCESS;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_SUCCESS) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
path.data = NULL;
path.num_data = 1;
path.status = CAIRO_STATUS_SUCCESS;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_NULL_POINTER) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
CAIRO_CREATE ();
/* Intentionally insert bogus header.length value (otherwise would be 2) */
data.header.type = CAIRO_PATH_MOVE_TO;
data.header.length = 1;
path.data = &data;
path.num_data = 1;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_INVALID_PATH_DATA) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
/* And test the degnerate case */
CAIRO_CREATE ();
path.num_data = 0;
cairo_append_path (cr, &path);
status = cairo_status (cr);
cairo_destroy (cr);
if (status != CAIRO_STATUS_SUCCESS) {
cairo_surface_destroy (surface);
return cairo_test_status_from_status (ctx, status);
}
cairo_surface_destroy (surface);
return CAIRO_TEST_SUCCESS;
}
/*! \private
* \brief Render the swatch into the cell
*
* \param [in] cell this cell renderer
* \param [in] window the window to renter to
* \param [in] widget the widget owning the window
* \param [in] background_area entire cell area
* \param [in] cell_area area rendered normally
* \param [in] expose_area the area requiring update
* \param [in] flags
*/
static void
render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
GtkCellRendererState flags)
{
GschemFillSwatchCellRenderer *swatch = GSCHEM_FILL_SWATCH_CELL_RENDERER (cell);
if (swatch->enabled) {
GdkColor color;
cairo_t *cr = gdk_cairo_create (window);
double offset = SWATCH_BORDER_WIDTH / 2.0;
gboolean success;
if (expose_area) {
gdk_cairo_rectangle (cr, expose_area);
cairo_clip (cr);
}
/* Paint the swatch using the text color to match the user's desktop theme.
*/
success = gtk_style_lookup_color (gtk_widget_get_style (widget),
"text_color",
&color);
if (success) {
cairo_set_source_rgb (cr,
color.red / 65535.0,
color.green / 65535.0,
color.blue / 65535.0);
}
cairo_move_to (cr,
(double) cell_area->x + offset,
(double) cell_area->y + offset);
cairo_line_to (cr,
(double) cell_area->x + (double) cell_area->width - offset,
(double) cell_area->y + offset);
cairo_line_to (cr,
(double) cell_area->x + (double) cell_area->width - offset,
(double) cell_area->y + (double) cell_area->height - offset);
cairo_line_to (cr,
(double) cell_area->x + offset,
(double) cell_area->y + (double) cell_area->height - offset);
cairo_close_path (cr);
if ((swatch->fill_type == FILLING_HATCH) || (swatch->fill_type == FILLING_MESH)) {
BOX box;
int index;
GArray *lines = g_array_new (FALSE, FALSE, sizeof (LINE));
cairo_path_t *save_path = cairo_copy_path (cr);
cairo_save (cr);
cairo_clip (cr);
box.lower_x = cell_area->x;
box.lower_y = cell_area->y;
box.upper_x = cell_area->x + cell_area->width;
box.upper_y = cell_area->y + cell_area->height;
m_hatch_box (&box, 135, SWATCH_LINE_PITCH, lines);
if (swatch->fill_type == FILLING_MESH) {
m_hatch_box (&box, 45, SWATCH_LINE_PITCH, lines);
}
for (index=0; index<lines->len; index++) {
LINE *line = &g_array_index (lines, LINE, index);
cairo_move_to (cr, line->x[0], line->y[0]);
cairo_line_to (cr, line->x[1], line->y[1]);
}
g_array_free (lines, TRUE);
cairo_set_line_width (cr, SWATCH_LINE_WIDTH);
cairo_stroke (cr);
cairo_restore (cr);
cairo_append_path (cr, save_path);
cairo_path_destroy (save_path);
}
if (swatch->fill_type == FILLING_FILL) {
cairo_fill_preserve (cr);
}
cairo_set_line_width (cr, SWATCH_BORDER_WIDTH);
cairo_stroke (cr);
cairo_destroy (cr);
}
}
static void
render (GtkWidget * widget)
{
GSMColorButton *color_button = GSM_COLOR_BUTTON (widget);
GdkColor *color, tmp_color = color_button->priv->color;
color = &tmp_color;
cairo_t *cr = gdk_cairo_create (gtk_widget_get_window (widget));
cairo_path_t *path = NULL;
gint width, height;
gdouble radius, arc_start, arc_end;
gint highlight_factor;
if (color_button->priv->highlight > 0) {
highlight_factor = 8192 * color_button->priv->highlight;
if (color->red + highlight_factor > 65535)
color->red = 65535;
else
color->red = color->red + highlight_factor;
if (color->blue + highlight_factor > 65535)
color->blue = 65535;
else
color->blue = color->blue + highlight_factor;
if (color->green + highlight_factor > 65535)
color->green = 65535;
else
color->green = color->green + highlight_factor;
}
gdk_cairo_set_source_color (cr, color);
gdk_drawable_get_size (gtk_widget_get_window (widget), &width, &height);
switch (color_button->priv->type)
{
case GSMCP_TYPE_CPU:
//gtk_widget_set_size_request (widget, GSMCP_MIN_WIDTH, GSMCP_MIN_HEIGHT);
cairo_paint (cr);
cairo_set_line_width (cr, 1);
cairo_set_source_rgba (cr, 0, 0, 0, 0.5);
cairo_rectangle (cr, 0.5, 0.5, width - 1, height - 1);
cairo_stroke (cr);
cairo_set_line_width (cr, 1);
cairo_set_source_rgba (cr, 1, 1, 1, 0.4);
cairo_rectangle (cr, 1.5, 1.5, width - 3, height - 3);
cairo_stroke (cr);
break;
case GSMCP_TYPE_PIE:
if (width < 32) // 32px minimum size
gtk_widget_set_size_request (widget, 32, 32);
if (width < height)
radius = width / 2;
else
radius = height / 2;
arc_start = -G_PI_2 + 2 * G_PI * color_button->priv->fraction;
arc_end = -G_PI_2;
cairo_set_line_width (cr, 1);
// Draw external stroke and fill
if (color_button->priv->fraction < 0.01) {
cairo_arc (cr, (width / 2) + .5, (height / 2) + .5, 4.5,
0, 2 * G_PI);
} else if (color_button->priv->fraction > 0.99) {
cairo_arc (cr, (width / 2) + .5, (height / 2) + .5, radius - 2.25,
0, 2 * G_PI);
} else {
cairo_arc_negative (cr, (width / 2) + .5, (height / 2) + .5, radius - 2.25,
arc_start, arc_end);
cairo_arc_negative (cr, (width / 2) + .5, (height / 2) + .5, 4.5,
arc_end, arc_start);
cairo_arc_negative (cr, (width / 2) + .5, (height / 2) + .5, radius - 2.25,
arc_start, arc_start);
}
cairo_fill_preserve (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 0.7);
cairo_stroke (cr);
// Draw internal highlight
cairo_set_source_rgba (cr, 1, 1, 1, 0.45);
cairo_set_line_width (cr, 1);
if (color_button->priv->fraction < 0.03) {
cairo_arc (cr, (width / 2) + .5, (height / 2) + .5, 3.25,
0, 2 * G_PI);
} else if (color_button->priv->fraction > 0.99) {
cairo_arc (cr, (width / 2) + .5, (height / 2) + .5, radius - 3.5,
0, 2 * G_PI);
} else {
cairo_arc_negative (cr, (width / 2) + .5, (height / 2) + .5, radius - 3.5,
arc_start + (1 / (radius - 3.75)),
arc_end - (1 / (radius - 3.75)));
cairo_arc_negative (cr, (width / 2) + .5, (height / 2) + .5, 3.25,
arc_end - (1 / (radius - 3.75)),
arc_start + (1 / (radius - 3.75)));
cairo_arc_negative (cr, (width / 2) + .5, (height / 2) + .5, radius - 3.5,
arc_start + (1 / (radius - 3.75)),
arc_start + (1 / (radius - 3.75)));
}
cairo_stroke (cr);
// Draw external shape
cairo_set_line_width (cr, 1);
cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
cairo_arc (cr, (width / 2) + .5, (height / 2) + .5, radius - 1.25, 0,
G_PI * 2);
cairo_stroke (cr);
break;
case GSMCP_TYPE_NETWORK_IN:
if (color_button->priv->image_buffer == NULL)
color_button->priv->image_buffer =
fill_image_buffer_from_file (cr, DATADIR "/pixmaps/gnome-system-monitor/download.svg");
gtk_widget_set_size_request (widget, 32, 32);
cairo_move_to (cr, 8.5, 1.5);
cairo_line_to (cr, 23.5, 1.5);
cairo_line_to (cr, 23.5, 11.5);
cairo_line_to (cr, 29.5, 11.5);
cairo_line_to (cr, 16.5, 27.5);
cairo_line_to (cr, 15.5, 27.5);
cairo_line_to (cr, 2.5, 11.5);
cairo_line_to (cr, 8.5, 11.5);
cairo_line_to (cr, 8.5, 1.5);
cairo_close_path (cr);
path = cairo_copy_path (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
cairo_set_line_width (cr, 1);
cairo_fill_preserve (cr);
cairo_set_miter_limit (cr, 5.0);
cairo_stroke (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 0.5);
cairo_append_path (cr, path);
cairo_path_destroy(path);
cairo_stroke (cr);
cairo_set_source_surface (cr, color_button->priv->image_buffer, 0.0,
0.0);
cairo_paint (cr);
break;
case GSMCP_TYPE_NETWORK_OUT:
if (color_button->priv->image_buffer == NULL)
color_button->priv->image_buffer =
fill_image_buffer_from_file (cr, DATADIR "/pixmaps/gnome-system-monitor/upload.svg");
gtk_widget_set_size_request (widget, 32, 32);
cairo_move_to (cr, 16.5, 1.5);
cairo_line_to (cr, 29.5, 17.5);
cairo_line_to (cr, 23.5, 17.5);
cairo_line_to (cr, 23.5, 27.5);
cairo_line_to (cr, 8.5, 27.5);
cairo_line_to (cr, 8.5, 17.5);
cairo_line_to (cr, 2.5, 17.5);
cairo_line_to (cr, 15.5, 1.5);
cairo_line_to (cr, 16.5, 1.5);
cairo_close_path (cr);
path = cairo_copy_path (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
cairo_set_line_width (cr, 1);
cairo_fill_preserve (cr);
cairo_set_miter_limit (cr, 5.0);
cairo_stroke (cr);
cairo_set_source_rgba (cr, 0, 0, 0, 0.5);
cairo_append_path (cr, path);
cairo_path_destroy(path);
cairo_stroke (cr);
cairo_set_source_surface (cr, color_button->priv->image_buffer, 0.0,
0.0);
cairo_paint (cr);
break;
}
cairo_destroy (cr);
}
void appendPathToCairoContext(cairo_t* to, cairo_t* from)
{
OwnPtr<cairo_path_t> cairoPath = adoptPtr(cairo_copy_path(from));
cairo_append_path(to, cairoPath.get());
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_path_data_t path_data[] = {
{ { CAIRO_PATH_MOVE_TO, 2 }, },
{ { 95.000000, 40.000000 }, },
{ { CAIRO_PATH_LINE_TO, 2 }, },
{ { 94.960533, 41.255810 }, },
{ { CAIRO_PATH_LINE_TO, 2 }, },
{ { 94.842293, 42.50666 }, },
{ { CAIRO_PATH_LINE_TO, 2 }, },
{ { 94.645744, 43.747627 }, },
{ { CAIRO_PATH_LINE_TO, 2 }, },
{ { 94.371666, 44.973797 }, },
};
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
cairo_path_t path, *path_copy;
int i, j, n;
cairo_test_status_t result = CAIRO_TEST_SUCCESS;
path.status = CAIRO_STATUS_SUCCESS;
path.num_data = sizeof (path_data) / sizeof (path_data[0]);
path.data = path_data;
cairo_new_path (cr);
cairo_append_path (cr, &path);
path_copy = cairo_copy_path (cr);
if (path_copy->status)
return cairo_test_status_from_status (ctx, path_copy->status);
for (i = j = n = 0;
i < path.num_data && j < path_copy->num_data;
i += path.data[i].header.length,
j += path_copy->data[j].header.length,
n++)
{
const cairo_path_data_t *src, *dst;
src = &path.data[i];
dst = &path_copy->data[j];
if (src->header.type != dst->header.type) {
cairo_test_log (ctx,
"Paths differ in header type after %d operations.\n"
"Expected path operation %d, found %d.\n",
n, src->header.type, dst->header.type);
result = FAIL;
break;
}
if (memcmp (&src[1].point, &dst[1].point, sizeof (src->point))) {
cairo_test_log (ctx,
"Paths differ in coordinates after %d operations.\n"
"Expected point (%f, %f), found (%f, %f).\n",
n,
src[1].point.x, src[1].point.y,
dst[1].point.x, dst[1].point.y);
result = FAIL;
break;
}
}
cairo_path_destroy (path_copy);
return result;
}
/**
* gimp_scan_convert_render_full:
* @sc: a #GimpScanConvert context
* @buffer: the #GeglBuffer to render to
* @off_x: horizontal offset into the @buffer
* @off_y: vertical offset into the @buffer
* @replace: if true the original content of the @buffer gets estroyed
* @antialias: if true the rendering happens antialiased
* @value: value to use for covered pixels
*
* This function renders the area described by the path to the
* @buffer, taking the offset @off_x and @off_y in the buffer into
* account. The rendering can happen antialiased and be rendered on
* top of existing content or replacing it completely. The @value
* specifies the opacity value to be used for the objects in the @sc.
*
* You cannot add additional polygons after this command.
*/
void
gimp_scan_convert_render_full (GimpScanConvert *sc,
GeglBuffer *buffer,
gint off_x,
gint off_y,
gboolean replace,
gboolean antialias,
gdouble value)
{
const Babl *format;
GeglBufferIterator *iter;
GeglRectangle *roi;
cairo_t *cr;
cairo_surface_t *surface;
cairo_path_t path;
gint bpp;
gint x, y;
gint width, height;
g_return_if_fail (sc != NULL);
g_return_if_fail (GEGL_IS_BUFFER (buffer));
x = 0;
y = 0;
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
if (sc->clip && ! gimp_rectangle_intersect (x, y, width, height,
sc->clip_x, sc->clip_y,
sc->clip_w, sc->clip_h,
&x, &y, &width, &height))
return;
path.status = CAIRO_STATUS_SUCCESS;
path.data = (cairo_path_data_t *) sc->path_data->data;
path.num_data = sc->path_data->len;
format = babl_format ("Y u8");
bpp = babl_format_get_bytes_per_pixel (format);
iter = gegl_buffer_iterator_new (buffer, NULL, 0, format,
GEGL_BUFFER_READWRITE, GEGL_ABYSS_NONE);
roi = &iter->roi[0];
while (gegl_buffer_iterator_next (iter))
{
guchar *data = iter->data[0];
guchar *tmp_buf = NULL;
const gint stride = cairo_format_stride_for_width (CAIRO_FORMAT_A8,
roi->width);
/* cairo rowstrides are always multiples of 4, whereas
* maskPR.rowstride can be anything, so to be able to create an
* image surface, we maybe have to create our own temporary
* buffer
*/
if (roi->width * bpp != stride)
{
tmp_buf = g_alloca (stride * roi->height);
if (! replace)
{
const guchar *src = data;
guchar *dest = tmp_buf;
gint i;
for (i = 0; i < roi->height; i++)
{
memcpy (dest, src, roi->width * bpp);
src += roi->width * bpp;
dest += stride;
}
}
}
surface = cairo_image_surface_create_for_data (tmp_buf ?
tmp_buf : data,
CAIRO_FORMAT_A8,
roi->width, roi->height,
stride);
cairo_surface_set_device_offset (surface,
-off_x - roi->x,
-off_y - roi->y);
cr = cairo_create (surface);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
if (replace)
{
cairo_set_source_rgba (cr, 0, 0, 0, 0);
cairo_paint (cr);
}
cairo_set_source_rgba (cr, 0, 0, 0, value);
cairo_append_path (cr, &path);
cairo_set_antialias (cr, antialias ?
CAIRO_ANTIALIAS_GRAY : CAIRO_ANTIALIAS_NONE);
cairo_set_miter_limit (cr, sc->miter);
if (sc->do_stroke)
{
cairo_set_line_cap (cr,
sc->cap == GIMP_CAP_BUTT ? CAIRO_LINE_CAP_BUTT :
sc->cap == GIMP_CAP_ROUND ? CAIRO_LINE_CAP_ROUND :
CAIRO_LINE_CAP_SQUARE);
cairo_set_line_join (cr,
sc->join == GIMP_JOIN_MITER ? CAIRO_LINE_JOIN_MITER :
sc->join == GIMP_JOIN_ROUND ? CAIRO_LINE_JOIN_ROUND :
CAIRO_LINE_JOIN_BEVEL);
cairo_set_line_width (cr, sc->width);
if (sc->dash_info)
cairo_set_dash (cr,
(double *) sc->dash_info->data,
sc->dash_info->len,
sc->dash_offset);
cairo_scale (cr, 1.0, sc->ratio_xy);
cairo_stroke (cr);
}
else
{
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_fill (cr);
}
cairo_destroy (cr);
cairo_surface_destroy (surface);
if (tmp_buf)
{
const guchar *src = tmp_buf;
guchar *dest = data;
gint i;
for (i = 0; i < roi->height; i++)
{
memcpy (dest, src, roi->width * bpp);
src += stride;
dest += roi->width * bpp;
}
}
}
}
void gfxContext::AppendPath(gfxPath* path)
{
if (path->mPath->status == CAIRO_STATUS_SUCCESS && path->mPath->num_data != 0)
cairo_append_path(mCairo, path->mPath);
}
svg_status_t _svg_android_set_pattern (svg_android_t *svg_android,
svg_element_t *pattern_element,
svg_android_render_type_t type)
{
svg_pattern_t *pattern = svg_element_pattern (pattern_element);
jobject pattern_bitmap;
jobject pattern_shader;
double x_px, y_px, width_px, height_px;
jobject path;
_svg_android_length_to_pixel (svg_android, &pattern->x, &x_px);
_svg_android_length_to_pixel (svg_android, &pattern->y, &y_px);
_svg_android_length_to_pixel (svg_android, &pattern->width, &width_px);
_svg_android_length_to_pixel (svg_android, &pattern->height, &height_px);
/* OK. We've got the final path to be filled/stroked inside the
* android context right now. But we're also going to re-use that
* same context to draw the pattern. And since the path is no
* longer in the graphics state, android_save/restore will not help
* us here.
*
* Currently we deal with this by manually saving/restoring the
* path.
*
* It might be simpler to just use a new cairo_t for drawing the
* pattern.
*/
path = svg_android->state->path; //cairo_copy_path (svg_android->cr);
svg_android->state->path = ANDROID_PATH_CREATE(svg_android); // cairo_new_path (svg_android->cr);
ANDROID_SAVE(svg_android);
pattern_bitmap = ANDROID_CREATE_BITMAP(svg_android,
(int) (width_px + 0.5),
(int) (height_px + 0.5));
#if 0
pattern_surface = cairo_surface_create_similar (cairo_get_target (svg_android->cr),
CAIRO_FORMAT_ARGB32,
(int) (width_px + 0.5),
(int) (height_px + 0.5));
#endif
_svg_android_push_state (svg_android, pattern_bitmap);
svg_android->state->matrix = ANDROID_IDENTITY_MATRIX(svg_android);
//cairo_identity_matrix (svg_android->cr);
svg_android->state->fill_paint.type = SVG_PAINT_TYPE_NONE;
svg_android->state->stroke_paint.type = SVG_PAINT_TYPE_NONE;
svg_element_render (pattern->group_element, &SVG_ANDROID_RENDER_ENGINE, svg_android);
_svg_android_pop_state (svg_android);
ANDROID_RESTORE(svg_android);
svg_android->state->path = path ;
#if 0
cairo_new_path (svg_android->cr);
cairo_append_path (svg_android->cr, path);
cairo_path_destroy (path);
#endif
pattern_shader = ANDROID_CREATE_BITMAP_SHADER(svg_android, pattern_bitmap);
ANDROID_PAINT_SET_SHADER(svg_android, pattern_shader);
#if 0
surface_pattern = cairo_pattern_create_for_surface (pattern_surface);
cairo_surface_destroy (pattern_surface);
cairo_pattern_set_extend (surface_pattern, CAIRO_EXTEND_REPEAT);
cairo_set_source (svg_android->cr, surface_pattern);
cairo_pattern_destroy (surface_pattern);
#endif
return SVG_STATUS_SUCCESS;
}
gboolean draw_callback
(GtkWidget *widget, GdkEventExpose *event, UNUSED gpointer data)
{
guint width, height;
cairo_pattern_t *color;
cairo_path_t *bolt, *fill, *text;
// Grab our widget size
width = widget->allocation.width;
height = widget->allocation.height;
// Set up Cairo
cairo_t *cr = gdk_cairo_create(widget->window);
cairo_set_antialias(cr, CAIRO_ANTIALIAS_BEST);
// Clear canvas
#ifdef BACKGROUND_FILL_ENTIRE_WIDGET
cairo_rectangle(cr, 0, 0, width, height);
#else
cairo_rectangle(cr, (MARGIN / 2) + STROKE_WIDTH, (MARGIN / 2) + STROKE_WIDTH, BATTERY_WIDTH, BATTERY_HEIGHT);
#endif
cairo_set_source_rgba(cr, COLOR_BACKGROUND, OPACITY_BACKGROUND);
cairo_fill(cr);
// Decide on a color
color = cairo_pattern_create_rgb(COLOR_DEFAULT);
if (battery_get_charging())
color = cairo_pattern_create_rgb(COLOR_CHARGING);
if (battery_get_critical())
color = cairo_pattern_create_rgb(COLOR_CRITICAL);
battery_border_draw(cr, color, (int)CENTERED(width, BATTERY_WIDTH),
(int)CENTERED(height, BATTERY_HEIGHT),
BATTERY_WIDTH,
BATTERY_HEIGHT,
STROKE_WIDTH,
PEG_WIDTH,
PEG_HEIGHT);
int fill_x = CENTERED(width, BATTERY_WIDTH);
int fill_y = CENTERED(height, BATTERY_HEIGHT);
// Set fill style
cairo_set_fill_rule(cr, CAIRO_FILL_RULE_EVEN_ODD);
// Generate battery fill
fill = battery_fill_generate(BATTERY_WIDTH, BATTERY_HEIGHT, battery_get_percent());
cairo_translate(cr, fill_x, fill_y);
cairo_append_path(cr, fill);
if (battery_get_charging()) {
int bolt_x = CENTERED(BATTERY_WIDTH, BOLT_WIDTH);
int bolt_y = CENTERED(BATTERY_HEIGHT, BOLT_HEIGHT);
cairo_translate(cr, bolt_x, bolt_y);
bolt = battery_bolt_generate(BOLT_WIDTH, BOLT_HEIGHT);
cairo_append_path(cr, bolt);
cairo_translate(cr, bolt_x, bolt_y);
} else {
cairo_text_extents_t extents;
char strpercent[5];
snprintf(strpercent, 5, "%i%%", (int)(battery_get_percent() * 100));
cairo_select_font_face(cr, FONT_FACE, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size(cr, FONT_SIZE);
cairo_text_extents(cr, strpercent, &extents);
int text_x = CENTERED(BATTERY_WIDTH, extents.width);
int text_y = CENTERED(BATTERY_HEIGHT, extents.height + extents.y_bearing*2);
text = battery_text_generate(strpercent, FONT_FACE, FONT_SIZE);
cairo_translate(cr, text_x, text_y);
cairo_append_path(cr, text);
cairo_translate(cr, -text_x, -text_y);
}
cairo_translate(cr, -fill_x, -fill_y);
cairo_set_source(cr, color);
cairo_fill(cr);
return FALSE;
}